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Finding the Fourth Proportional to 228,366.09, 342,455.42 and 68,385.65

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Solution

The fourth proportional to 228,366.09, 342,455.42 and 68,385.65 is: 102,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,366.09 : 342,455.42 = 68,385.65 : x
  2. Step 2: Convert to fraction form
    228,366.09/342,455.42 = 68,385.65/x
  3. Step 3: Cross multiply
    228,366.09x = 342,455.42 × 68,385.65
  4. Step 4: Simplify right side
    228,366.09x = 23,419,034,438.52
  5. Step 5: Solve for x
    x = 23,419,034,438.52/228,366.09
  6. Step 6: Final answer
    x = 102,550.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.